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MELBOURNE, Australia (AP) — The Latest on Saturday at the Australian Open (all times local):

11:35 p.m.

Hsieh Su-wei, who beat Wimbledon champion Garbine Muguruza in the second round, added another seeded player to her Australian Open victory collection with a 6-2, 7-5 win over No. 26 Agnieszka Radwanska.

On the last match of the night on Margaret Court Arena, Radwanska became upset with Hsieh's preoccupation with having moths removed from the court by ballboys and ballgirls, suggesting to the chair umpire that they shouldn't bother because the insects were "everywhere" on the court.

Thiem has now reached the round of 16 or better at each of his last six Grand Slam tournaments. He maintained his perfect record against Mannarino, beating the Frenchman for the seventh consecutive time.

He will next play the winner of Friday's later match between Tennys Sandgren and Maximilian Marterer.

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3 p.m.

Top-seeded Simona Halep served for the match four times before prevailing 4-6, 6-4, 15-13 over American Lauren Davis in a marathon match at Rod Laver Arena.

Halep saved three match points in the 22nd game of the third set at 0-40 and Davis saved five break points in the 23rd game in the 3 hour, 45-minute match. The final set took 2 hour, 22 minutes and Halep won on her first match point when Davis hit a forehand wide along the sideline.

Davis twice had medical timeouts in the final set to have blisters on both feet treated.

Halep will play the winner of Saturday's later match between local hope Ashleigh Barty and Naomi Osaka.

Madison Keys is through to the fourth round of the Australian Open after starting Saturday's program on Margaret Court Arena with a 6-3, 6-4 win over Ana Bogdan.

The 17th-seeded Keys, who lost in the U.S. Open final last year to Sloane Stephens, saved three break points serving for the match, finally clinching it on her first match point when Bogdan netted a backhand.

Keys will next play the winner of Saturday's later match between Aliaksandra Sasnovich and eighth-seeded Caroline Garcia.

The big match Saturday had the only two women's major champions left in the tournament playing each other — 2008 Australian winner Maria Sharapova vs. 2016 Melbourne Park champion Angelique Kerber.

That was the first night match scheduled for Rod Laver Arena, with Roger Federer to follow in his third-round match against Richard Gasquet.